diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index 455d05f6d7..209fe9a595 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -6,7 +6,7 @@ name: OpenTimelineIO
 # for configuring which build will be a C++ coverage build / coverage report
 env:
   GH_COV_PY: 3.7
-  GH_COV_OS: ubuntu-20.04
+  GH_COV_OS: ubuntu-latest
   GH_DEPENDABOT: dependabot
 
 on:
@@ -24,15 +24,15 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04, windows-2022, macos-11]
+        os: [ubuntu-latest, windows-latest, macos-latest]
         # Unfortunately the CMake test target is OS dependent so we set it as
         # a variable here.
         include:
-        - os: ubuntu-20.04
+        - os: ubuntu-latest
           OTIO_TEST_TARGET: test
-        - os: windows-2022
+        - os: windows-latest
           OTIO_TEST_TARGET: RUN_TESTS
-        - os: macos-11
+        - os: macos-latest
           OTIO_TEST_TARGET: test
 
     env:
@@ -86,13 +86,13 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04, windows-2022, macos-11]
+        os: [ubuntu-latest, windows-latest, macos-latest]
         python-version: ['2.7', '3.7', '3.8', '3.9', '3.10']
         include:
-          - { os: ubuntu-20.04, shell: bash }
-          - { os: macos-11, shell: bash }
-          - { os: windows-2022, shell: pwsh }
-          - { os: windows-2022, shell: msys2, python-version: 'mingw64' }
+          - { os: ubuntu-latest, shell: bash }
+          - { os: macos-latest, shell: bash }
+          - { os: windows-latest, shell: pwsh }
+          - { os: windows-latest, shell: msys2, python-version: 'mingw64' }
 
     defaults:
       run:
@@ -158,7 +158,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04, windows-2022, macos-11]
+        os: [ubuntu-latest, windows-latest, macos-latest]
         python-build: ['cp27*', 'cp37*', 'cp38*', 'cp39*', 'cp310*']
     steps:
       - uses: actions/checkout@v3
@@ -206,7 +206,7 @@ jobs:
 
   package_sdist:
     needs: py_build_test
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
       with:
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 19df9d17fa..41f6781813 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,7 +7,7 @@ cmake_minimum_required(VERSION 3.18.2)
 # TODO: read this information from a configuration file, here, and in setup.py
 
 set(OTIO_VERSION_MAJOR "0")
-set(OTIO_VERSION_MINOR "15")
+set(OTIO_VERSION_MINOR "16")
 set(OTIO_VERSION_PATCH "0")
 set(OTIO_VERSION ${OTIO_VERSION_MAJOR}.${OTIO_VERSION_MINOR}.${OTIO_VERSION_PATCH})
 
diff --git a/OTIO_VERSION.json b/OTIO_VERSION.json
index bdef9208a3..42f1608fc7 100644
--- a/OTIO_VERSION.json
+++ b/OTIO_VERSION.json
@@ -1 +1 @@
-{"version": ["0", "15", "0"]}
+{"version": ["0", "16", "0"]}
\ No newline at end of file
diff --git a/setup.py b/setup.py
index f1b3a4abd6..49a198addd 100644
--- a/setup.py
+++ b/setup.py
@@ -201,7 +201,7 @@ def cmake_install(self):
 
 # Metadata that gets stamped into the __init__ files during the build phase.
 PROJECT_METADATA = {
-    "version": "0.15.0",
+    "version": "0.16.0.dev1",
     "author": 'Contributors to the OpenTimelineIO project',
     "author_email": 'otio-discussion@lists.aswf.io',
     "license": 'Modified Apache 2.0 License',
diff --git a/src/opentimelineio/CORE_VERSION_MAP.cpp b/src/opentimelineio/CORE_VERSION_MAP.cpp
index 1eee987c64..7a8c21aecb 100644
--- a/src/opentimelineio/CORE_VERSION_MAP.cpp
+++ b/src/opentimelineio/CORE_VERSION_MAP.cpp
@@ -78,6 +78,38 @@ const label_to_schema_version_map CORE_VERSION_MAP{
           { "Transition", 1 },
           { "UnknownSchema", 1 },
       } },
+    { "0.16.0.dev1",
+      {
+          { "Adapter", 1 },
+          { "Clip", 2 },
+          { "Composable", 1 },
+          { "Composition", 1 },
+          { "Effect", 1 },
+          { "ExternalReference", 1 },
+          { "FreezeFrame", 1 },
+          { "Gap", 1 },
+          { "GeneratorReference", 1 },
+          { "HookScript", 1 },
+          { "ImageSequenceReference", 1 },
+          { "Item", 1 },
+          { "LinearTimeWarp", 1 },
+          { "Marker", 2 },
+          { "MediaLinker", 1 },
+          { "MediaReference", 1 },
+          { "MissingReference", 1 },
+          { "PluginManifest", 1 },
+          { "SchemaDef", 1 },
+          { "SerializableCollection", 1 },
+          { "SerializableObject", 1 },
+          { "SerializableObjectWithMetadata", 1 },
+          { "Stack", 1 },
+          { "Test", 1 },
+          { "TimeEffect", 1 },
+          { "Timeline", 1 },
+          { "Track", 1 },
+          { "Transition", 1 },
+          { "UnknownSchema", 1 },
+      } },
     // {next}
 };
 
diff --git a/src/opentimelineio/CORE_VERSION_MAP.last.cpp b/src/opentimelineio/CORE_VERSION_MAP.last.cpp
index 713d9761a0..1eee987c64 100644
--- a/src/opentimelineio/CORE_VERSION_MAP.last.cpp
+++ b/src/opentimelineio/CORE_VERSION_MAP.last.cpp
@@ -46,6 +46,38 @@ const label_to_schema_version_map CORE_VERSION_MAP{
           { "Transition", 1 },
           { "UnknownSchema", 1 },
       } },
+    { "0.15.0",
+      {
+          { "Adapter", 1 },
+          { "Clip", 2 },
+          { "Composable", 1 },
+          { "Composition", 1 },
+          { "Effect", 1 },
+          { "ExternalReference", 1 },
+          { "FreezeFrame", 1 },
+          { "Gap", 1 },
+          { "GeneratorReference", 1 },
+          { "HookScript", 1 },
+          { "ImageSequenceReference", 1 },
+          { "Item", 1 },
+          { "LinearTimeWarp", 1 },
+          { "Marker", 2 },
+          { "MediaLinker", 1 },
+          { "MediaReference", 1 },
+          { "MissingReference", 1 },
+          { "PluginManifest", 1 },
+          { "SchemaDef", 1 },
+          { "SerializableCollection", 1 },
+          { "SerializableObject", 1 },
+          { "SerializableObjectWithMetadata", 1 },
+          { "Stack", 1 },
+          { "Test", 1 },
+          { "TimeEffect", 1 },
+          { "Timeline", 1 },
+          { "Track", 1 },
+          { "Transition", 1 },
+          { "UnknownSchema", 1 },
+      } },
     // {next}
 };